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Application filed by Pentti Johannes ToivanenfiledCriticalPentti Johannes Toivanen
Priority to FI751560ApriorityCriticalpatent/FI50781C/fi
Application grantedgrantedCritical
Publication of FI50781BpublicationCriticalpatent/FI50781B/fi
Publication of FI50781CpublicationCriticalpatent/FI50781C/fi